Panel presents on pinniped predation
- March 26, 2026
- Kym Buzdygon
Sea lion predation on salmon and steelhead in the Columbia River Basin remains a source of concern for regional fish and wildlife managers.
Tag – Predation
Double-crested Cormorant Colony at Astoria-Megler Bridge to Be Relocated Back to East Sand Island
- December 06, 2023
- Carol Winkel
In the last 10 years, the cormorant population has grown 1500% at Astoria Bridge, both accelerating erosion of the bridge and increasing salmon predation.
Double-crested Cormorants Relocating Upriver Increases Predation of Salmon
- November 21, 2022
- Carol Winkel
Avian predation – hungry birds feeding on endangered salmon – is identified in the Council’s fish and wildlife program as a serious concern, and the program supports managing the impact of predators on juvenile salmon and steelhead.
Falconry-based avian abatement
- June 14, 2022
- Carol Winkel
Earlier this spring, the Yakama Nation contracted professional falconers to work with their fisheries staff to successfully delay the nesting of the Miller Rocks gull colony by several weeks.
Avian Predation: A River System Out Of Balance
- May 18, 2020
- John Harrison
For one steelhead species, the impact is significant, but overall the amount of predation has declined over recent years, a hopeful sign, researchers say.
Sea Lion Reports: Stellers Are Staying Longer At Bonneville And Feasting On Winter Steelhead
- May 05, 2020
- John Harrison
Big sea lions are causing big problems for Columbia River salmon and steelhead, according to the U.S. Army Corps of Engineers' annual report on sea lion predation at Bonneville Dam.
Decision Expected This Summer On Application To Remove More Sea Lions
- April 17, 2020
- John Harrison
Application targets aggressive sea lions that prey on Columbia River fish between the ocean and McNary Dam.
Council Recommends Funding for Larger Dock to Handle Sea Lions at Bonneville Dam
- January 16, 2019
The Council this month approved a request from the Washington Department of Fish and Wildlife for the Bonneville Power Administration to fund the construction of a floating platform big enough to handle Steller sea lions, which can weigh more than
Analysis Will Help Target Efforts To Reduce Predation
- December 13, 2018
- John Harrison
Fisheries scientists at the Columbia River Inter-Tribal Fish Commission are developing a model to help better target efforts to control predation on fish in the Columbia and Snake rivers.
Management Actions Have Reduced Predation On Fish By Caspian Terns In The Columbia River Estuary
- September 14, 2018
- John Harrison
A management plan to reduce predation by Caspian terns on fish in the Columbia River appears to be working, the research scientist who directs the effort told the Council at its September meeting.
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